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Trusted Supplier of Quality Interlocking Blocks in Swansea, Carmarthenshire & Across South Wales

Expertly Manufactured & Supplied by us for Superior Quality
From initial enquiry and design through to quotation, supply and professional installation, Gravel works provides a complete interlocking concrete block service, with as much or as little support as you need.

More than just 'Concrete Blocks'

Whether you need a retaining wall, storage area, agricultural structure or a heavy duty barrier, our interlocking concrete blocks offer a tailored and practical solution. With Gravel Works, you don't have to coordinate multiple suppliers, we can take care of the whole process from initial enquiry and design through to quotation, supply and installation.

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  • Retaining Walls
    Ideal for stabilising soil and preventing erosion

  • Storage Bays
    Perfect for creating organised storage areas for aggregates, grain, and more

  • Temporary Buildings
    Easily assembled and disassembled for flexible construction needs

  • Partition Walls
    Effective for dividing spaces in warehouses, factories, or outdoor areas

Why choose Gravel Works?

Choosing us means more than just simply ordering concrete interlocking blocks. We provide a complete, supported service from your initial enquiry through to design, supply and the additional offering of professional installation. Our high experienced team can create a bespoke block layout around your site, available space, access requirements and intended use. With 4d drawings helping you visualise the finished structure and providing a list and quotation of blocks that you actually need. We can also advise on aesthetics, positioning and practical considerations, giving you confidence that your concrete block structure is designed to work for your project.

You have one team, supporting you throughout the process, providing genuine added value and a straightforward solution to your interlocking block project in South Wales.

Step 1

Enquiry

Tell us what you need, where you're based and what you're looking to achieve. We'll discuss your requirements, gather some images and measurements of the site and determine the right solution.

Step 2

Design

We'll work  to understand your requirements and create a practical block layout suited to your project, site and intended use. We will also discuss with you any extra requirements you have for the project including rock face patterns and sloped blocks. We will create a 4d design for you to approve before quoting.

Step 3

Quote

Once we understand your project and have a design that is signed off by you, we'll provide a clear, tailored quotation covering the materials, delivery and installation requirements.

Step 4

Supply & Fit

Once your project is approved and your blocks are made, we'll arrange your supply and delivery, working around your site requirements and agreed schedule.
We can arrange for experienced fitters to complete the installation, leaving you with a durable, professionally fitted solution ready to use.

Concrete Interlocking Blocks

We supply & delivery high-quality Interlocking Concrete Blocks designed for a variety of applications across Swansea, Carmarthenshire, and South Wales. These versatile, interlocking blocks are perfect for constructing retaining walls, storage bays, partition walls, and even temporary buildings.

With their modular design, our concrete blocks allow for easy installation and reconfiguration, making them ideal for both permanent and temporary solutions.

We also offer the option to add a rock face pattern to the exterior of the blocks and to add a 45 degree slope to blocks of any size to change the aesthetic or allow you to create a style that suits your space.

View all sizes and weights

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$55
(5 stars) • 11 reviews
Sizes Available (mm)
600x600x600
600x600x900
600x600x1200
600x600x1500
600x600x1800
800x800x800
800x800x1600
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Collection or local delivery available

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If you know what you need, fill in the form below and we will be in touch with a no obligation quote.

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Completed Project

Sloped Access Installation for Earth and Sun Landscaping

We completed the construction of a clean and durable sloping access to a site container. To achieve this, we built a robust retaining wall using our high-quality interlocking concrete blocks.

The project involved:

Designing a stable and tidy sloped entry for improved access.

Carefully preparing the base with compacted aggregate to ensure long-term stability.

Client

Earth and Sun Landscaping

Date

March 2026

Trusted by Many

Building Trust, One Block at a Time

"Amazing service from start to finish.
I visited their depot at 13:30 on  a Tuesday and was provided with very good advice. I ordered Sub Base and Blue slate at an excellent price.
The delivery was the following day at 09:30, with a phone call an hour earlier to advise me of the approximate time.
Both members of staff, sales then delivery, were friendly and polite."
Michael Davies
Google reviews
"We used Adam at Gravelworks for a whole stack of materials! Ton bags of sand and cement for rendering, ton bags of purple slate for decorative finish to a garden area as well as scalping for internal damp proof course. Not only was the product reasonable, it was delivered next day even if we ordered the stuff at short notice - as in “can we have this tomorrow”."
Rob Hart
Google reviews
"Excellent  service from Adam  he helped with all my queries.Delivery  was on time to our home  as agreed.Prices are  very reasonable , the  products are very  good quality.Same items we bought  were much cheaper than the companies  we looked at  online."
Angela Lazenby
Google Reviews
01792 677187